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This is a portable device designed to capture airborne pollutants directly at their source. It uses a flexible nozzle or hood to immediately contain the pollution, then pulls the contaminated air through a filter using a vacuum generator like a motor blower. The cleaned air is then released away from the user.
Why it matters: Filed before modern battery technology made powerful, truly portable suction devices feasible. Today's compact, high-capacity batteries could enable a more practical and effective version.
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